The full and complete description of the Nine Circles of Hell is presented in three Books. This module completes and expands the 1980 Judges Guild module, Inferno. Book One describes means of entry into Hell by portals, from the wilderness, and through a dungeon; it also describes an area of Gehenna above the Great Pit, the Gates of Hell, and Outer Hell, consisting of Circle Zero through the Fifth Circle. More than thirty encounter areas are described, including the Shining Hill, Vile Forest, Gates of Hell, Noble Castle, and the River Archeron,